Question about Briggs & Stratton 66set Panzer Tractor Decal 6hp 1960s

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2.5 year old, 15.5 hp Briggs cranks but wont fire

Was shown how nuts holding valves had worked themselves loose, very loose. after adjusting tried starting without spark plug and had no compression at all. repairman said loose valves had probably burnt the piston, or knocked a hole in it. so now I have a two year old $1000 mower thats worthless. this comes 7 months after warranty expires. bought in november 06, I was told Briggs changed design from horizontal valves to an angled valve. is my Briggs dead from poor design and who do I see about getting a new motor, a free new motor.

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  • mark groves
    mark groves May 11, 2010

    This was a common problem for some models, I would ring briggs and explain the situation and how many hours it has done. You may have to take it to your local dealer for assesment and he should contact them about it. Hopefully they will come to the party.Either way let me know how you go.Just remember the bigger the noise you make about it the more likely they will do something about it.



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Make shore that the valves are not rideing no tappet clearance back both roccers of and try for comp there has to be a tappet clearance for there to be comp or set the inlet at 5 thou and the exhaust at 10 thou on the comp stroke .horizontal b/s have a very good past very good engine in the past

Posted on Sep 02, 2009


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